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sortix--sortix/libmaxsi/memory.cpp
Jonas 'Sortie' Termansen 6781308360 Rewrote the memory allocation functions.
free(3) can now unify unused neighbor blocks, reducing mem usage.
2011-11-27 22:53:05 +01:00

69 lines
1.7 KiB
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/******************************************************************************
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
This file is part of LibMaxsi.
LibMaxsi is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
memory.cpp
Useful functions for manipulating and handling memory.
******************************************************************************/
#include "platform.h"
#include "memory.h"
#include "error.h"
#ifndef SORTIX_KERNEL
#include "syscall.h"
#endif
namespace Maxsi
{
namespace Memory
{
#ifndef SORTIX_KERNEL
DEFN_SYSCALL2(int, SysMemStat, 32, size_t*, size_t*);
extern "C" int memstat(size_t* memused, size_t* memtotal)
{
return SysMemStat(memused, memtotal);
}
#endif
DUAL_FUNCTION(void*, memcpy, Copy, (void* Dest, const void* Src, size_t Length))
{
char* D = (char*) Dest; const char* S = (const char*) Src;
for ( size_t I = 0; I < Length; I++ )
{
D[I] = S[I];
}
return Dest;
}
DUAL_FUNCTION(void*, memset, Set, (void* Dest, int Value, size_t Length))
{
byte* D = (byte*) Dest;
for ( size_t I = 0; I < Length; I++ )
{
D[I] = Value & 0xFF;
}
return Dest;
}
}
}